Improvement in grain-screens



J. J.- CRIDER.

Grain Screen.

No. 84,345. Patented Nov. 24, 1868,

' 606 Wain/@660 Y a Maze; 1 Q@ sate rte emu gaunt nesaa time JOHN J. CRI'DER, OF G EENFIELD, INDIANA.

Letters Patent No. 84,345, dated November 24, 1868.

IIVEROVEIVIIENT IN GRAIN-SCREENS.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom 'it may concern Be it known that I, J OHN J. OBIDER, of Greenfield, in the county of Hancock, and State of Indiana, have invented a new and useful Improvement in Grain- Screens 5 and I do hereby declare the following to be .a full, clear, and exact description thereof, reference being had to. the accompanying drawings, which are made a part of this specification, and in which Figure 1 is a vertical longitudinal section of the ma chine, and p t Figure 2 is a transverse vertical section on the line a. b, fig. 1.

The grain is fed by a spiral conveyer intoone end of the rotary cylinder, at about the axis thereof; is raised at the' discharge-end by means of slats, drops from them into pockets on one of the screen-heads,

passes through holes in the latter, and falls into the de livering-tnbe and discharge-chute. This latter arrangement afi'ords a means of delivering the grain at a point in the vicinity. of the axis, instead of making openingsnear the periphery.

In the drawings, A is the frame of the machine, upon which the screen B-is supported. Its axial shaft 0 is journalled" in the standard a of the frame, and the short tube. D, forming its other journal, rests in the other standard, a. This tube has a spiral ridge or flange, 'i, which feeds the grain gradually from the hopper E to the inside of the screen, which is formed of two heads, e e, longitudinal slats, f j, which are prolonged inteinally,'to form shelves, g, and a wire cov-v ering, which may have square and long meshes in alis caught by the pockets or cups H, which are attached to the head 0, and present their openings towards the periphery. The grain collected in the cups H passes, by apertures h, through the head 0, into the tube I,

whence it drops into the chute K in a clean condition.

The small offal and dirt pass through the meshes of the screen into the space L, and are thence discharged from the machine, separate from the plump grain.

Having described my invention,

What I claim therein as new, and desire to secure by Letters Patent, is-

1. The head 6, provided with cups H and apertures h, adapted to collect and deliver the grain, substantially in the manner shown and described.

2. The worm or spiral conveyor i, in its application to the feed-end of a rotating grain-screen, and adapted to feed the grain in regular quantity, substantially as described.

' JOHN J ORIDER. Witnesses:

JACOB SLIFER, R. A. RILEY. 

